Characters of Planet Savers

Below is a listing of the main characters (play a really important
role in the novel), the important characters (many events won't
happen without them), the other characters who appear in the novel
and finally characters which are only mentioned in the novel :

Main characters:

Dr. Jason Allison Jr., Terran medical doctor with
multiple personalities; lived with the Trailmen for eight years as a child,
later spent five years in the Spacemen's Orphanage in Thendara.

Jay Allison, Jason's split personality; doesn't remember
anything of the years spent with the Trailmen and in the orphanage.